45 articlesThe Furnace mod is one of the Legendary Class Mods exclusive to Amon in Borderlands 4. Uniquely, this Class Mod makes all of Amon’s abilities deal Incendiary Damage. While that might be a bit limiting in some ways, it’s also extremely strong whenever you’re fighting anything weak to fire. You’ll be able to burn them down in seconds! If that sounds like a fun build for you, read on to know where to find this mod.
How to Get the Furnace Legendary Amon Class Mod | Borderlands 4
The Furnace Legendary Class Mod for Amon is a random drop from Idolator Sol. This is the boss at the end of the Fortress Indomita in Idolator’s Noose, The Fadefields. The map above shows where the Fortress Indomita is. You’ll need to have completed the “Rush the Gate” main story mission to be able to farm this one!
Ultimately, all you need to do is kill Idolator Sol over and over until you get the Furnace mod to drop. Remember, you can conveniently respawn the boss by using Moxxi’s Big Encore machine. It’s right next to the entrance to the arena and it just requires a small fee of your in-game cash.
Do note, though, this isn’t the only Legendary drop you can get from Idolator Sol! He can also drop a bunch of other Legendary items, including Class Mods such as Rafa’s Dancer Class Mod.
Borderlands 4: Pearlescent Item Guide Soul SurvivorMar 31, 2026
Borderlands 4 Released a Major Update with Some Quality-of-Life Improvements, Alongside a Free DLCNov 21, 2025
Take-Two CEO Blames Troublesome PC Performance for Borderlands 4’s “Softer” than Expected SalesNov 7, 2025In addition to this dedicated drop source, it’s also possible for this Class Mod to drop from other random sources. Of course, though, there’s no guarantee for that. So, you’re better off just farming Idolator Sol if this is the one piece of equipment you want.
As for the Class Mod itself, its unique trait makes it so that damage from Fellfrost, Hoarcleave, Fulminating Fist, and Stormcutter is converted to Incendiary Damage. If you’re making an Amon build that’s all about Incendiary damage, this is your best bet!
So, there you have. That’s how to get the Furnace Legendary Class Mod for Amon in Borderlands 4. It’s going to be heavily luck-reliant, as is always the case with Borderlands… so, we wish you luck!
